ACE Step Prompt to Audio | Realistic Voice & TTS API

ACE-Step — Prompt to Audio 🎶

ACE-Step Prompt-to-Audio is an intelligent music generation model that composes full-length audio tracks directly from text prompts. Simply describe the sound you want — from chill jazz to cinematic orchestral — and ACE-Step creates a polished piece in seconds.

✨ Key Features

Prompt-to-Music Creation Just write your idea in plain language. For example: “A jazzy chillout track with a cozy vibe about rainy evenings in a quiet café.”
Instrumental Mode Toggle the instrumental option to generate music without vocals — perfect for background use, podcasts, or film scoring.
Duration Control Use the slider to set your track length — anywhere from a few seconds to full-minute compositions (e.g., 60s).
Seed for Reproducibility Set the seed value to recreate the same song later, or randomize it for unique variations.
Genre & Emotion Understanding The model interprets keywords like “jazzy,” “dark,” “energetic,” “melancholic,” and blends rhythm, instruments, and mood accordingly.

🎧 Use Cases

Music Production & Songwriting — Draft melodies, instrumentals, or complete compositions in seconds.
Film, Game & Animation Scoring — Create background themes, ambient layers, and emotional moments effortlessly.
Social Media & Marketing — Produce custom soundtracks for reels, ads, or brand videos.
Education & Experimentation — Teach musical structure or explore AI-based composition.
Creative Exploration — Turn story ideas, emotions, or visual scenes into sound.

🧠 Example Prompts

“A cheerful pop song about summer memories.”
“Dark electronic beat with deep bass and atmospheric pads.”
“Calm piano and violin piece inspired by sunrise.”
“Lo-fi hip-hop track for late-night studying.”
“Epic orchestral theme with rising intensity.”

⚙️ How to Use

Enter a prompt describing mood, genre, or theme.
(Optional) Enable Instrumental for vocal-free music.
Adjust duration with the slider (e.g., 30s, 45s, 60s).
Set seed for reproducibility (or keep random for new results).
Click Generate — and listen to your AI-composed track.

💰 Pricing

Metric	Price
Per second of generated audio	$0.0002 / s

🎵 Summary

ACE-Step Prompt-to-Audio transforms words into music — from short jingles to full-length compositions. It’s your AI-powered music studio, ready to help musicians, creators, and filmmakers bring sound to life with just a sentence.

Ace Step Prompt To Audio API — Quick start

Grab a WaveSpeedAI API key, then call POST https://api.wavespeed.ai/api/v3/wavespeed-ai/ace-step/prompt-to-audio with your input as JSON. The endpoint returns a prediction id; poll the prediction endpoint until status flips to completed, then read the output URL from data.outputs[0]. Examples for Ace Step Prompt To Audio below.

HTTP example

# Submit the prediction
curl -X POST "https://api.wavespeed.ai/api/v3/wavespeed-ai/ace-step/prompt-to-audio" \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY" \
  -d '{
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "instrumental": false,
    "duration": 60,
    "seed": -1
}'

# Response includes a prediction id. Poll for the result:
curl -X GET "https://api.wavespeed.ai/api/v3/predictions/{request_id}/result" \
  -H "Authorization: Bearer $WAVESPEED_API_KEY"

# When status is "completed", read the output from data.outputs[0].

Node.js example

// npm install wavespeed
const WaveSpeed = require('wavespeed');

const client = new WaveSpeed(); // reads WAVESPEED_API_KEY from env

const result = await client.run("wavespeed-ai/ace-step/prompt-to-audio", {
        "prompt": "A cinematic shot of a city at sunset, soft golden light",
        "instrumental": false,
        "duration": 60,
        "seed": -1
});

console.log(result.outputs[0]); // → URL of the generated output

Python example

# pip install wavespeed
import wavespeed

output = wavespeed.run(
    "wavespeed-ai/ace-step/prompt-to-audio",
    {
    "prompt": "A cinematic shot of a city at sunset, soft golden light",
    "instrumental": false,
    "duration": 60,
    "seed": -1
}
)

print(output["outputs"][0])  # → URL of the generated output

Ace Step Prompt To Audio API — Frequently asked questions

What is the Ace Step Prompt To Audio API?

Ace Step Prompt To Audio is a WaveSpeedAI model for audio generation, exposed as a REST API on WaveSpeedAI. ACE-Step Prompt-to-Audio creates music from simple prompts, auto-generating genre tags and lyrics for quick song creation. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing. You can call it programmatically or try it from the playground above.

How do I call the Ace Step Prompt To Audio API?

POST your input parameters to the model's REST endpoint (shown in the API tab of this playground) with your WaveSpeedAI API key in the Authorization header. Submission returns a prediction ID; poll the prediction endpoint until status flips to "completed", then read the output URL from the result. The playground generates a ready-to-paste code sample in Python, JavaScript, or cURL for whatever inputs you've set. Full request/response shape is documented at https://wavespeed.ai/docs/docs-api/wavespeed-ai/ace-step-prompt-to-audio.

How much does Ace Step Prompt To Audio cost per run?

Ace Step Prompt To Audio starts at $0.000 per run. That figure is the base price — the final charge scales with the parameters you set in the form (output size, length, count, references, or whatever knobs this model exposes), so a higher-quality or larger output costs more than a minimal one. The exact cost for your current input is shown live next to the Generate button before you submit, and the actual per-call charge is recorded on the prediction afterwards.

What inputs does Ace Step Prompt To Audio accept?

Key inputs: `prompt`, `duration`, `seed`, `instrumental`. The full JSON schema (types, defaults, allowed values) is rendered above the Generate button and mirrored in the API reference at https://wavespeed.ai/docs/docs-api/wavespeed-ai/ace-step-prompt-to-audio.

How long does Ace Step Prompt To Audio take to generate?

Average end-to-end generation time on WaveSpeedAI is around 87 seconds per request — measured across recent runs. Queue time scales with global demand; live status is visible in the prediction record.

Can I use Ace Step Prompt To Audio outputs commercially?

Commercial usage rights depend on the model's license, set by its provider (WaveSpeedAI). The license summary appears on the model card above; see WaveSpeedAI's Terms of Service for platform-level conditions.

ExamplesView all

Related Models

README